and the delta \(\delta (\sum _{i=1}^d p_i)\)  implements the closure constraint, see [1]}, [2]}.
\(\Lambda \)  is the UV cutoff which will impose that the modulus of momentum vectors remains less than \(\Lambda \) , namely, \(|\vec{p}|\le \Lambda \) . We keep in mind that we will eventually take the limit \(\Lambda \rightarrow \infty \) . We define a model by its action at a high (UV) energy scale. The classical action \(S_{int}\)  is defined as a sum of tensorial invariances [3]}, [4]}:
\(S_{int}[\bar{T},T]=\sum _{b\in \mathcal {B}}\lambda _{b}\mathrm {Tr}_b[\bar{T},T].\) 
